Epoxy wrinkle on rubber impregnated paper



Dec. 2, 1958 B. E. LEDERMAN EPOXY WRINKLE ON RUBBER IMPREGNATED PAPERFiled Feb. 17, 1956 2 Sheets-Sheet 1 INVENTOR BURTON E LEDERMA/VATTORNEYS Dec. 2, 1958 B. E. LEDERMAN 2,862,835

EPOXY WRINKLE 0N RUBBER IMPREGNATED PAPER Filed Feb. 17, 1956 2Sheets-Sheet 2 I INVENTOR. sumo/v E. LEDERMAN BY W A TmkA/EYS UnitedStates Patent EPOXY WRINKLE 0N RUBBER IMPREGNATED PAPER Burton E.Lederman, Dayton, Ohio, assignor to The Commonwealth Engineering Companyof ()hio, Dayton, Ohio, a corporation of Ohio Application February 17,1954;, Serial No. 566,130 10 Claims. (Cl. 117-41) This invention relatesto printing in wrinkle finishes.

It is an object of the invention to provide a high speed method andapparatus for causing designs to appear in wrinkle finishes in eitherplain or diverse wrinkle formulations on the surface of a sheet ofpaper, textile, vinyl film, and the like, without any contact by theprinting design with the surface of the wrinkle and without any changein the formulation of the wrinkle.

It is a further object to provide rubber impregnated sheets,particularly epoxy wrinkles, in order to facilitate, in some cases, thismethod of printing.

It is an object to provide a master printing plate consisting of eithera flat plate or drum for rotary printing which is flush with itssupporting insulating board, the plate being all metal, so as to yield adesign or printed words and letters without raising the background ofthe paper that is being used without embossing the paper, textile, etc.

It is an object to utilize the phenomenon discovered that the greatdifferential in heat conduction between a metal design and insulatingmaterial such as Masonite, cardboard, wood, air, etc. permits of thisdiverse wrinkling on the surface of the supporting medium withoutcontact on that surface by the design in metal.

It is an object thereby to use the raised design by the use of heat anda heat insulating board acting as a support for the metallic design whenthe heat source was above the coating with the metal of the designbeneath the supporting media on the opposite side from the coatingthereby achieving fast dissipation of heat from the media so supportedin the area supported by the metallic design while the remaining area isinsulated by an air space retained the heat and wrinkled and yellowedfaster than wrinkle finish into more pronounced designs as compared withthe designs of the wrinkling where the design itself was located.

It is an object of the invention to provide for faster heat dissipationthrough the metal of the design to thereby change the wrinkling effectin the design area as contrasted with the wrinkling effect in thenon-design area.

It is an object to provide a printing surface with a countersunkmetallic design supported by and in a nonconductor with the surfacemetallic design substantially flush with the metallic design.

Referring to the drawings,

Figure l is a side elevation of a diagrammatic view of the mechanism forpracticing this invention.

Figure 2 is an isometric perspective view of the same mechanism brokenaway to show the location of the infra red lamps, the Masoniteinsulation board support and the metallic letters supported thereon toprovide a design.

Figure 3 is a section on the line 33 of Figure 2 looking in thedirection of the arrows. I

Figure 4 is an enlarged view of a portion of a backing strip coated withwrinkle finish in which the design has a different textured pattern fromthat of the non-design area.

Figure 5 is a view of an alternate method of heating the metallic designfrom the bottom and optionally from the top simultaneously.

Figure 6 is a view similar to Figure 1 showing the use of a drumcarrying a design synchronized to rotate with the movement of the paperbeing driven from a common source and interconnected together so thatthe design can be applied to the surface of the supporting media underthe infra red ray lamps.

Figure 7 is a plan view of apportion of the design drum consisting ofthe insulation material supporting the metallic design.

Figure 8 is a modified construction showing the use of electric heaters,a metal design plate with air spaces under the raised portion andaninsulation board supplying the metal design.

Referring to the drawings, 1A'is a roll of supporting media such aspaper either latex impregnated or textile materials, vinyl film, etc.Thesupporting media from the roll passes beneath applicators designated.2 where'the wrinkle finishes are applied. These Wrinkle finishes may beapplied by spraying, by flow-coating or by roller coating. Theinherently flexible epoxy wrinkle finishes are preferred, particularlywhen they are adjusted to quick drying and wrinkling by a suitablecatalyst. However, plasticized alkyd and oleoresinous Wrinkles might beused. The composition of the wrinkle forms no part of this invention.

In Figure 1 there is illustrated the spraying of the Wrinkle finishes 2on the sheet 1. This sheet with coating of the wrinkle liquid inwrinkled condition passes into the heating chamber 3 where the infra redlamps .4 direct their light on the top of the paper which is supportingthe wrinkle finish. Beneath the paper and in taut engagement with it dueto'tightness of the, paper as it moves step-by-step through the heatoven 3 under the lamps 4 are designs of metal designated 5 supporting inor by insulation plates such as Masonite 6. In the areas where the metalengages the paper a different wrinkle finish of a different design willappear as illustrated in Figure 4 at the bottom ofthe first sheet ofdrawings. As this formulation is effected rapidly the process iscontinuous. The sheet thus formed into wrinkle finishes having designsis wound on the roll 7 by the pulley 8 and belt 9 mounted on the pulley10 on the armature shaft 11.

Turning to Figure 6, it will-be observed a rotary drum of insulatingmaterial 11 has mounted either imbedded in the surface of the drum orprojecting slightly above the surface of the drum a metallic design 12.This drum is mounted on a frame 13 on the supportingshaft 14 on which ismounted a pulley 15 and a belt 16 which engages the motor pulley 10. Inthis way the motor 10 which moves the supporting media from its supplyto its stored condition in the roll 7 has its printing roll 11synchronized with its movements.

It will be noted in all cases that the supporting media sheet 1 isarranged to be drawn tightly over the surface of the printing design. Itis preferred to havethe infra red lamps above the design although theymay be placed below the design in some cases wheredirect access to therear of the printing design of metal maybe possible. In some cases thelamps are placed both above and below the media as coated and the designmechanism.

Example I A sheet of paper is impregnated with rubber latex. There isapplied to the surface of the impregnated sheet when dry a thin coatingof wrinkle finish, I preferably of the epoxy-ester type. This sheetwhile wet is: moved over and in tight engagement with a metallic designsupported in or upon an insulation, supportofMasonite or the like.Simultaneously, it is subjected to infra red heat for baking to causethe wrinkle finish, which is, when applied in its liquid form, smooth toconvert into a wrinkle design consisting of'a background of wrinklefinish and a design of wrinkle finish ofa different configuration andappearance. The paper is maintained in a taut condition in firmengagement with the metallic design and passes through the chamber underthe lamps for a period suflicient to cause the wrinkle finish to becompletely formed and hardened as a result of the baking operation.Because of the completion of the coating with its design in hardenedcondition the supporting media and the wrinkle finish can be wound on asuitable roll for further decorative use.

Example II In a high speed operation, with a very quick drying wrinklefinish, the supporting media which may be a vinyl film, polyethylenefilm, a paper, treated or untreated, textile materials etc., the roll ofsuch material on it delivery directly on the machine manufacturing itresults in the sheet being sprayed with either a roller coater, a sprayor an electrostatic applicator of wrinkle finish fluid. The coated sheetthen passes over a synchronized rotary drum which is driven from thesource of power that is moving the sheet. The sheet is moved over thedrum under the infra red lamps. The drum is of insulation materialhaving either mounted on it or imbedded in its surface a metallic designthat is desired to be reproduced in a reverse Wrinkle finish on thesurface of the supporting media. If paper is used the paper may eitherbe impregnated with rubber latex or it may be sealed or unsealed withthe usual sealers such as mordants, clays, etc.

The differential in the design may be either due to a different designof wrinkle or to different color result due to different yellowing ratesas I have observed a phenomenon that due to the metallic baking of thedesign there is a different color resulting, or it may be due to bothdifferent yellowing and configuration. This difference in color can beaccelerated by combining with the wrinkle finish pigments that aresensitive to heat in certain ranges, that is, such pigments when heatedto the higher temperature inherent in the metallic design will bephoto-activated and bring about a printed effect due to change incolordue to greater heat in the design areas than in the areas where there iseither an insulation board or no support at all and the ordinary wrinklefinish in the ordinary color remains. however, that baking the metallicplate, constituting the design, with an insulation material, with theheat source above the metallic design, and with the wrinkle coated paperbetween the metallic design and the heat source, more rapid effects areattained in bringing about this design printing. By this adjustment ofthelocation of the insulation support with reference to metallic design,the speed of formation of the wrinkle and the wrinkle design can becontrolled. It can also control the size and nature of the wrinklefinish in both the non-design areas and in the design areas.

Example 111 When it is desired to secure a very sharp differentiation ofa design, particularly a delicate design, it is preferred to use asupporting media such as paper of an unsealed White latex stock. Theprocess of forming the design is as discussed in the previous examples,but by treating the stock with latex I have found that a sharper .designresults. Likewise, this provides a means of adjusting the shades ofcolor in the design area and gives a sharper differentiation as aresult. Subtle designs and printing with the Wrinkle itself can beproduced in a paper coating wrinkle by the selective choice of abacking. plate. having a conducting and insulating sur- It has beenfound, r

face with the heat source directed primarily to the wet coated upperpaper surface.

Various typical flash dry and baking schedules may be employed. Both thewhite unsealed paper stocks as well as sealer papers of heavier stockcan be employed.

Example IV By employing a synthetic resin filrn of transparent ortranslucent character, particularly one with metallic particles embodiedin it, provides a very satisfactory material for use with this processfor employment as shower curtains, window shades, draperies and otherdecorative materials such as wall decorations, particularly where lightsare located behind the wall decorations. By employing these metalbearing transparent and translucent films the wrinkle finish oftransparent character, either with or Without pigments, may be employed.When this treated sheet moves over the metallic design supported by theinsulation, as described, and beneath the infra red lamps the formationof the wrinkle results so that there is a diverse wrinkle between thebackground and the design. Due to the presence of the metallic particlesin the transparent or translucent material the degree of the wrinkle hasthe effect of changing the degree of reflectivity of the metallicparticles hung in the path of a light source. There is upon thefinishing of such media, so treated and so impregnated metallicparticles beautifully scintillating of the desired design and color asthe media itself may be also colored while still remaining transparentor translucent and the transparent wrinkle finish may or may not itselfbe a carrier of metallic particles. In the event that only the wrinklefinish carries metallic particles, then the result is accordinglyinteresting, or if the supporting media carries the metallic particles,the diversity of the wrinkle finishes will produce a diversity of designeffects.

Example V As shown in Figure 8 a metal plate 5 with raised portions toindicate the configuration or design may be mounted upon a lightweightboard 6. The paper carrying the wrinkle finish is designated 1 and isbrought over the top of the metal plate which, because of its areas thathave been struck up, has under such areas air spaces. The electricheating element is designated 17. A clear impression of the configuratedplate is made in the wrinkle pattern. There is a definite case ofdifference in the wrinkle configuration in the background and over theconfigurations in the middle. When a heat insulating board is placedunder the metal plate in the electric oven, a good effect is obtained.This indicates the need for the heat source to be above the coating withthe metal sheet with its upraised letters and numerals achieving a fastdissipation through the metal where it engages the backing of thecarrier sheet 1, there is a difference in the wrinkling over the raisedbacked areas and those that are not raised.

The foregoing examples are typical of the wide variety of treatment thatcan be effected by the method and apparatus of this invention. It makespossible the use of a wide variety of opaque translucent and transparentsupporting media with a wide variety of pigments, temperatures, colorsand reflectivity substances.

It is understood that the particular form of heat may be. varied, thewave length of such heat lights may be varied, the composition of thewrinkle may be of a great many different'types and kinds and thesupporting media may vary widely. The basis of the invention is toprovide such decorative materials with high speed printing of the designgiving diversity of effect on the wrinkle surface. It is an object to dothis at high speed and low cost with a minimum of equipment.

It will be understood that this invention is susceptible to modificationin order to adapt it to different usages and conditions, and,accordingly it is desired to comprehend within this invention as mayfall the appended claims.

such modifications within the scope of I claim:

1. In a method of manufacturing a wrinkle finish sheet of supportingmedia coated with a wrinkle finish and having a wrinkle finish designthereon, the step (a) of applying the liquid coating wrinkle finish, thestep (b) of supporting the resultant coated sheet on a metallic design,and the step (c) of heating the said coated sheet and design whilesupported in contact with a heat insulating material to form a differentpattern of wrinkle finish over the design as contrasted with the rest ofthe wrinkle finish sheet.

2. In a method of manufacturing a wrinkle finish sheet of supportingmedia coated with a wrinkle finish and having a wrinkle finish designthereon, the step (a) of applying the liquid coating wrinkle finish, thestep (b) of supporting the resultant coated sheet on a metallic design,and the step (c) of heating the said coated sheet and design to form adifferent pattern of wrinkle finish over the design as contrasted withthe rest of the wrinkle finish sheet, the step (d) of supporting themetallic design against the back of the sheet with an insulatingmaterial that is substantially non-heat absorbent.

3. In a method of forming a wrinkle design on a wrinkle finish sheet thestep (a) of applying a wrinkle drying coating finish, the step (b) ofapplying a physical design member of a desired configuration to one sideof the sheet after it has been coated, and the step (c) of heating theother side of the sheet on which the wrinkle material has been coatedwhile supported in contact with a heat insulating material to form adiverse wrinkle effect in the design area as contrasted with thebackground area.

4. In a method of forming a design on a wrinkle coated sheet ofdifferent wrinkle texture from that of the background texture of thewrinkle on the sheet, combining the step (a) of applying a liquidcoating wrinkle drying composition to the sheet on one side, the step(b) of applying heat on the same side and simultaneously to the coatingwith wrinkle, the step (c) of simultaneously supporting the other sidewith a metallic design against a heat insulating material during saidheating of the wrinkle coating.

5. In a method of forming a design on a wrinkle coated sheet ofdifferent wrinkle texture from that of the background texture of thewrinkle on the sheet, combining the step (a) of applying a liquidwrinkle drying composition to the sheet on one side, the step (b) ofapplying heat on the same side simultaneously to the coating withwrinkle, the step (c) of simultaneously supporting the other side with ametallic design, and the step (d) of supporting the metallic design witha non-metallic support whereby the design will only appear in adifiierent wrinkle over the metallic portion and the heat will bereflected back from the non-metallic support so as to control thewrinkling effect.

6. In a mechanism for diverse printing of a wrinkle surface comprisingmeans for applying a liquid wrinkle drying composition to the surface ofa sheet, a printing means comprising a metallic design supported on aheat insulating material beneath the wrinkle coated sheet, a heat sourceabove the coated side of the sheet and means for moving the sheet withreference to the design and the heat source so that successive designsof the same character may be applied on the same sheet.

7 In a mechanism for printing a design in a wrinkle finish of diversewrinkle character on a sheet, means of supporting a sheet in tautcondition, means of passing the sheet through a heating zone, said meanson the coated side of the sheet, means of coating them with a wrinkledrying coating composition before it enters the heat zone and means forsupporting the design beneath the sheet and selectively restricting theapplication of heat by the same source of heat that heated the wrinklefinish to cause it to wrinkle.

8. In a mechanism for printing a design in a wrinkle finish of diversewrinkle character on a sheet, means of supporting a sheet in tautcondition, means of passing the sheet through a heating zone, said meanson the coated side of the sheet, means of coating them with a wrinkledrying coating composition before it enters the heat zone and means forsupporting the design beneath the sheet adapted to be heated by the samesource of heat that heated the wrinkle finish to cause it to wrinkle,said design being mounted upon a rotary drum, the surface of whichcomprises heat insulating material and which is maintained in closeengagement with the underside of the sheet in the heat zone, said drumbeing synchronized in its movements with the movements of the sheet, forthe application of wrinkle finish and the application of heat to thewrinkle finish on the sheet during the period the sheet is in engagementwith the metallic design on the drum.

9. A method of producing a decorative coating on a substrate whichcomprises applying to the surface of the substrate a wrinkle dryingcomposition, bringing a metal shape design having a desiredconfiguration contiguous with the under'surface of said coatedsubstrate, and heating the coating while supported in contact with aheat insulating material to cause the same to wrinkle and form acontrasting wrinkle texture pattern conforming to said metal shapedesign with a surrounding background of different wrinkle texturepattern.

10. As a new article of manufacture made in accordance with process ofclaim 9 comprising a flexible sheet of material having a wrinkle finishsurface, said wrinkle finish surface comprising a design orconfiguration thereon, said design comprising a wrinkle finish having adifferent texture wrinkle than that of the surrounding area and forminga background for the design.

References Cited in the file of this patent UNITED STATES PATENTS1,831,323 Root Nov. 10, 1931 2,344,807 Drummond Mar. 21, 1944 2,467,228Pritzker Apr. 12, 1949 2,511,024 Toulmin June 13, 1950 2,536,048Flanagan Jan. 2, 1951 2,763,568 McBride Sept. 18, 1956 FOREIGN PATENTS717,942 Great Britain NOV. 3, 1954

6. IN A MECHANISM FOR DIVERSE PRINTING OF A WRINKLE SURFACE COMPRISINGMEANS FOR APPLYING A LIQUID WRINKLE DRYING COMPOSITION TO THE SURFACE OFA SHEET, A PRINTING MEANS COMPRISING A METALLIC DESIGN SUPPORTED ON AHEAT INSULATING MATERIAL BENEATH THE WRINKLE COATED SHEET, A HEAT SOURCEABOVE THE COATED SIDE OF THE SHEET AND MEANS FOR MOVING THE SHEET WITHREFERENCE TO THE DESIGN AND THE HEAT SOURCE SO THAT SUCCESSIVE DESIGNSOF THE SAME CHARACTER MAY BE APPLIED ON THE SAME SHEET.